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. 1996 Jun;70(6):3698–3705. doi: 10.1128/jvi.70.6.3698-3705.1996

(Alkylamino) piperidine bis(heteroaryl)piperizine analogs are potent, broad-spectrum nonnucleoside reverse transcriptase inhibitors of drug-resistant isolates of human immunodeficiency virus type 1 (HIV-1) and select for drug-resistant variants of HIV-1IIIB with reduced replication phenotypes.

R A Olmsted 1, D E Slade 1, L A Kopta 1, S M Poppe 1, T J Poel 1, S W Newport 1, K B Rank 1, C Biles 1, R A Morge 1, T J Dueweke 1, Y Yagi 1, D L Romero 1, R C Thomas 1, S K Sharma 1, W G Tarpley 1
PMCID: PMC190245  PMID: 8648704

Abstract

The (alkylamino)piperidine bis(heteroaryl)piperizines (AAP-BHAPs) are a new class of human immunodeficiency virus type 1 (HIV-1)-specific inhibitors which were identified by targeted screening of recombinant reverse transcriptase (RT) enzymes carrying key nonnucleoside reverse transcriptase inhibitor (NNRTI) resistance-conferring mutations and NNRTI-resistant variants of HIV-1. Phenotypic profiling of the two most potent AAP-BHAPs, U-95133 and U-104489, against in vitro-selected drug-resistant HIV-1 variants carrying the NNRTI resistance-conferring mutation (Tyr->Cys) at position 181 of the HIV-1 RT revealed submicromolar 90% inhibitory concentration estimates for these compounds. Moreover, U-104489 demonstrated potent activity against BHA-P-resistant HIV-1MF harboring the Pro-236->Leu RT substitution and significantly suppressed the replication of clinical isolates of HIV-1 resistant to both delavirdine (BHAP U-90152T) and zidovudine. Biochemical and phenotypic characterization of AAP-BHAPresistant HIV-1IIIB variants revealed that high-level resistance to the AAP-BHAPs was mediated by a Gly-190->Glu substitution in RT, which had a deleterious effect on the integrity and enzymatic activity of virion-associated RT heterodimers, as well as the replication capacity of these resistant viruses.

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Selected References

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